SerializerWriter 类
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
定义实现插件文档输出序列化程序所需的抽象方法和事件。
public ref class SerializerWriter abstractpublic abstract class SerializerWritertype SerializerWriter = classPublic MustInherit Class SerializerWriter- 继承
-
SerializerWriter
- 派生
示例
以下示例说明了 SerializerWriter 的用法。
// Create a SerializerProvider for accessing plug-in serializers.
SerializerProvider serializerProvider = new SerializerProvider();
// Locate the serializer that matches the fileName extension.
SerializerDescriptor selectedPlugIn = null;
foreach ( SerializerDescriptor serializerDescriptor in
serializerProvider.InstalledSerializers )
{
if ( serializerDescriptor.IsLoadable &&
fileName.EndsWith(serializerDescriptor.DefaultFileExtension) )
{ // The plug-in serializer and fileName extensions match.
selectedPlugIn = serializerDescriptor;
break; // foreach
}
}
// If a match for a plug-in serializer was found,
// use it to output and store the document.
if (selectedPlugIn != null)
{
Stream package = File.Create(fileName);
SerializerWriter serializerWriter =
serializerProvider.CreateSerializerWriter(selectedPlugIn,
package);
IDocumentPaginatorSource idoc =
flowDocument as IDocumentPaginatorSource;
serializerWriter.Write(idoc.DocumentPaginator, null);
package.Close();
return true;
}
// ------------------------ PlugInFileFilter --------------------------
/// <summary>
/// Gets a filter string for installed plug-in serializers.</summary>
/// <remark>
/// PlugInFileFilter is used to set the SaveFileDialog or
/// OpenFileDialog "Filter" property when saving or opening files
/// using plug-in serializers.</remark>
private string PlugInFileFilter
{
get
{ // Create a SerializerProvider for accessing plug-in serializers.
SerializerProvider serializerProvider = new SerializerProvider();
string filter = "";
// For each loadable serializer, add its display
// name and extension to the filter string.
foreach (SerializerDescriptor serializerDescriptor in
serializerProvider.InstalledSerializers)
{
if (serializerDescriptor.IsLoadable)
{
// After the first, separate entries with a "|".
if (filter.Length > 0) filter += "|";
// Add an entry with the plug-in name and extension.
filter += serializerDescriptor.DisplayName + " (*" +
serializerDescriptor.DefaultFileExtension + ")|*" +
serializerDescriptor.DefaultFileExtension;
}
}
// Return the filter string of installed plug-in serializers.
return filter;
}
}
构造函数
| SerializerWriter() |
初始化 SerializerWriter 类的新实例。 |
方法
事件
| WritingCancelled |
在派生类中重写时，当执行 CancelAsync() 操作时发生。 |
| WritingCompleted |
在派生类中重写时，当写操作完成时发生。 |
| WritingPrintTicketRequired |
在派生类中重写时，恰好在通过 PrintTicket 或 Write 方法将 WriteAsync 添加到流之前发生。 |
| WritingProgressChanged |
在派生类中重写时，当 SerializerWriter 更新其进度时发生。 |
